The following points summarize the key concepts in this chapter:
- The benefits provided by a network are connections, communications, and services.
- There are two types of networks: server networks and peer-to-peer networks.
- A network topology describes the physical layout of the network. There are three basic topologies: bus, star, and ring.
- In order to function on a network, each computer must have a network interface card (NIC) and a network operating system (NOS).
- The three types of network cabling are twisted-pair, coaxial, and fiber-optic.
- Early "portable" computers were heavy, and usually more worthy of the term "luggable."
- Today's laptops and notebooks have most of the features of a desktop machine in a very compact package—but at a much higher cost.
- A computer technician should know the four types of PCMCIA cards and their uses.
- Batteries and power management are key factors to consider when maintaining portable computers.